Have a 12 mile rated Cobra, works ok up to about 5 miles, but has to be a almost totally unabstructed transmission. will not go thru or over hills, trees ETC if you are transmiting or receiving over 1 mile.
Friend had a set and we tried them. Five miles on uneven terrain is about tops, line of sight would be much better. We got fairly good reception on the highway at 10 miles. The band/channels you use do require you to have a license (as though all who buy these take the time and trouble to get a license...just like the old CB days). They are way better than my old Cobra 2 milers.
I needed a couple of extra radios to go hunting in Colorado several weeks ago, I bought two of the newer 17 mile Motorola radios to use with my older 5 mile Motorola radios. The new didn't work as well as the older ones. I was in the mountains and there were several times they wouldn't work 1 mile in the wooded areas. When I got home, I returned them to Gander Mtn. I contacted Motorola about them & I was told I probably wasn't using them as they were intended???